That differs greatly by manufacturer and configuration. SKF uses as a guideline 15 or more points on a crusher, 30 or more on a conveyor, 23 or more on a wheel loader, and 28 or more on a dumper. In practice we arrive at 15 to 45 per crusher, 8 to 30 per screening unit, and 30 to over 200 per conveyor run. We count them during the installation scan and record them in a lubrication plan.